| Parameter | Specification |
|---|---|
| Sensor Type | Ambient Pressure Sensor |
| Technology | MEMS-based pressure transducer |
| Pressure Range | 0–120 kPa (customizable) |
| Accuracy | ±1.0% FS (-40°C to +125°C) |
| Operating Temperature | -40°C to +125°C |
| Storage Temperature | -40°C to +130°C |
| Output Signal | 0.4–4.65V or 0.5–4.5V (configurable) |
| Supply Voltage | 4.75–5.25 VDC |
| Overvoltage Protection | 18 VDC |
| Reverse Polarity Protection | -14 VDC |
| Burst Pressure | 3×P max |
| Overpressure Tolerance | 2×P max |
| Output Load (Capacitive) | Max 470nF |
| Output Load (Resistive) | Min 4.7kΩ |
| Short Circuit Protection | Yes |
| Supply Current | ≤10 mA |
| Cycling Test | 200,000 cycles |
| Housing Material | PBT+30%GF (Polybutylene Terephthalate with Glass Fiber) |
| Protection Rating | IP67 |
| Mounting Interface | Threaded connection, custom connector available |
| Dimensions | Compact design, optimized for tight engine bay spaces |
| Compliance | RoHS, REACH, ISO 7637-2 |
The Automotive Ambient Pressure Sensor is a critical component used in modern vehicles to monitor changes in atmospheric pressure, providing essential data for engine management, climate control, and altitude-aware driving systems. Typically mounted on the vehicle chassis or under the hood, this sensor continuously measures ambient air pressure and converts it into an electrical signal sent to the vehicle’s electronic control unit (ECU). This information enables the ECU to adjust fuel injection, ignition timing, and turbocharger boost pressure based on elevation and weather conditions—ensuring optimal engine performance, fuel efficiency, and emissions compliance across diverse geographic regions.
Utilizing advanced MEMS (Micro-Electro-Mechanical Systems) technology, this sensor delivers high accuracy, long-term stability, and exceptional reliability under varying environmental conditions. It maintains ±1.0% full-scale accuracy across a wide temperature range (-40°C to +125°C), ensuring consistent performance in extreme climates from desert heat to Arctic cold. The intelligent zero-point and temperature compensation algorithms automatically correct for thermal drift and environmental variations, minimizing measurement errors over time. With excellent EMC/ESD performance, it resists electromagnetic interference and electrostatic discharge common in automotive environments, ensuring stable signal transmission even in high-noise conditions.
The sensor features comprehensive protection mechanisms: overvoltage (18V DC), reverse polarity (-14V DC), short-circuit resistance, and burst pressure tolerance of 3×P max, ensuring durability in complex electrical systems. Its IP67-rated housing provides complete sealing against moisture, dust, and road debris, making it ideal for use in under-hood and under-chassis locations exposed to vibration, shock, and chemical exposure. The compact size and modular design allow for easy integration into existing vehicle architectures, with customizable options for pressure range, output signal (0.4–4.65V or 0.5–4.5V), and physical dimensions to meet OEM-specific requirements.
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